Category: Triazoles

New discoveries in chemical research and development in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 7411-23-6, name is 3,5-Dibromo-1H-1,2,4-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. Safety of 3,5-Dibromo-1H-1,2,4-triazole

An argon gas atmosphere was prepared in a reaction vessel, then, a compound MC7-a (100 g), potassium carbonate (110 g) and N,N?-dimethylformamide (500 mL) were added, and the mixture was heated up to 90 C. Thereafter, to this was added an N,N?-dimethylformamide (100 mL) solution containing a compound MC7-b (109 g), and the mixture was stirred at 100 C. for 1 hour. Thereafter, the mixture was cooled down to room temperature, ion exchanged water and chloroform were added, and the organic layer was extracted. The resultant organic layer was washed with ion exchanged water, dried over anhydrous magnesium sulfate, then, filtered through a filter paved with silica gel, and the resultant filtrate was concentrated under reduced pressure, thereby obtaining an oil. The resultant oil was purified by silica gel column chromatography (a mixed solvent of heptane and ethyl acetate), then, dried under reduced pressure at 45 C., thereby obtaining a compound MC7-c (117 g, yield: 94%) as a colorless oil. The compound MC7-c showed a HPLC area percentage value of 99.5% or more. This operation was conducted repeatedly, thereby obtaining a necessary amount of the compound MC7-c. (0446) TLC/MS (DART, positive): m/z=281.9 [M+H]+ (0447) 1H-NMR (CD2Cl2, 300 MHz): delta (ppm)=3.94 (d, 2H), 2.32-2.23 (m, 1H), 0.95 (d, 6H).

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 3,5-Dibromo-1H-1,2,4-triazole help many people in the next few years.

Reference:
Patent; Sumitomo Chemical Company, Limited; ABE, Taichi; ASADA, Kohei; OHUCHI, Kazuei; (80 pag.)US2017/166599; (2017); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Related Products of 288-36-8, New Advances in Chemical Research in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 288-36-8, name is 1H-1,2,3-Triazole, molecular formula is C2H3N3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

1,2,3-triazole (3.45 g, 50 mmol), 2-iodo-5-methylbenzoic acid (5.24 g, 20 mmol), cesium carbonate (0.57 g, 3.6 mmol), cuprous iodide (0.38 g, 2 mmol), trans-N, N’-dimethyl-1,2-cyclohexanediamine (0.51 g, 3.6 mmol), N, N-dimethylformamide (30 mL)was added sequentially to a 100 mL single-necked round bottom flask and gradually heated under nitrogen to 100 C for 4 hours. The reaction was quenched, cooled, diluted with tap water and washed with ethyl acetate (200 mL x 2). The aqueous layer was acidified with concentrated hydrochloric acid (pH = 1~2) and extracted with ethyl acetate (200 mL x 2). The organic layers were combined and dried over anhydrous sodium sulfate. The filtrate was evaporated under reduced pressure and purified by column chromatography (dichloromethane / methanol (v/v) = 50/1) to give the title compound (yellow solid, 2.76 g, 68%).

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Reference:
Patent; Guangdong Dongyangguang Pharmaceutical Co., Ltd.; Dongguan Dongyangguang Pharmaceutical Research And Development Co., Ltd.; Jin Chuanfei; Du Changfeng; Zhang Yingjun; Liu Yanping; Kou Yuhui; (38 pag.)CN106986859; (2017); A;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Research speed reading in 2021. The dynamic chemical diversity of the numerous elements, ions and molecules that constitute the basis of life provides wide challenges and opportunities for research. 81606-79-3, name is 2-(1,2,4-Triazol-1-yl)acetonitrile belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. SDS of cas: 81606-79-3

General procedure: Using the procedure in Example 8, and starting with (2S,3R)-N-((S)-l-((2-fluoro-4- methylbenzyl)amino)-3-(3-formylphenoxy)-l-oxopropan-2-yl)-3-hydroxy-2-pivalamido- butanamide, the title compound was obtained. LC-MS (ES, m/z): 605.5 [M+H].

The catalyzed pathway has a lower Ea, but the net change in energy that results from the reaction is not affected by the presence of a catalyst. In my other articles, you can also check out more blogs about 81606-79-3

Reference:
Patent; BRAMELD Kenneth; OWENS Timothy; WO2015/195950; A1; (2015);,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Research speed reading in 2021. In classical electrochemical theory, both the electron transfer rate and the adsorption of reactants at the electrode control the electrochemical reaction. 16681-65-5, name is 1-Methyl-1H-1,2,3-triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 16681-65-5

Intermediate 19: step a (2,6-dimethylpyridin-3-yl)(1-methyl-1H-1,2,3-triazol-5-yl)methanol A solution of n-butyllithium in hexanes (2,5 M, 22,5 mL, 56.3 mmol) was added dropwise by syringe to a stirring solution of 1 -methyl- IH- 1 ,2,3-triazole (5.00 g, 60.2 mmol, prepared according to PCX Int. AppL, 2008098104) in dry tetrahydrofuran (400 mL) at -55 C. The resulting off-white slurry was stirred at -45 C for 20 minutes, whereupon a solution of 2,6- dimethyl-pyridine-3-carbaldehyde (8.33 g, 61 .7 mmol) in dry tetrahydrofuran (10 mL) was added dropwise by syringe. After 5 minutes, the cooling bath was removed and the reaction mixture was allowed to slowly warm. After 45 minutes, saturated aqueous ammonium chloride solution (10 mL) and ethyl acetate (100 mL) were added. The mixture was concentrated by- rotary evaporation. The residue was dissolved in ethyl acetate (300 mL). The organic solution was washed with saturated aqueous sodium chloride solution (100 mL, containing excess solid sodium chloride). The aqueous layer was extracted with ethyl acetate (2 x 100 mL). The organic layers were combined and the combined solution was concentrated. Ether (100 mL) was added to the residue and the mixture was sonicated for 20 minutes during which time a white solid crashed out. The solids were collected by filtration. Ether (100 mL) was added to the collected solids and the mixture sonicated a second time. After 20 minutes, the mixture was filtered and the solids were collected to provide the title compound as a fine powder.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 16681-65-5, and we look forward to future research findings.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; LEONARD, Kristi A.; BARBAY, Kent; EDWARDS, James P.; KREUTTER, Kevin D.; KUMMER, David A.; MAHAROOF, Umar; NISHIMURA, Rachel; URBANSKI, Maud; VENKATESAN, Hariharan; WANG, Aihua; WOLIN, Ronald L.; WOODS, Craig R.; FOURIE, Anne; XUE, Xiaohua; CUMMINGS, Maxwell D.; JONES, William Moore; GOLDBERG, Steven; WO2015/57205; (2015); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world.1186050-58-7, name is 2-Fluoro-6-(2H-1,2,3-triazol-2-yl)benzoic acid belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 1186050-58-7

A mixture of [4-(Hexahydro-pyrrolo[3,4-c]pyrrol-2-yl)-6-methoxy-pyrimidin-2-yl]- dimethyl-amine (60.0 mg, 0.23 mmol), 2-fluoro-6-[1 ,2,3]triazol-2-yl-benzoic acid (52.0 mg, 0.25 mmol), HATU (130.0 mg, 0.34 mmol) and DIPEA (0.12 mL, 0.68 mmol) was stirred into DMF (4.0 mL) at room temperature for 30 minutes. The reaction mixture was diluted with ethyl acetate (60.0 mL) and washed with water (2 X 100 mL). The organic phase was dried (Na2SO4), filtered and concentrated to dryness to yield crude title compound (354.0 mg, 343 %). The crude product was purified using Agilent HPLC (Basic system) to yield pure title compound (84.0 mg, 81 .5 %). MS (ESI) mass calcd. for C22H25FN8O2,452.49; m/z found 453.3 [M+H]+. 1 H NMR (CDCI3): 7.88-7.79 (m, 2H), 7.72 (d, J = 6.7, 1 H), 7.54-7.41 (m, 1 H), 7.19-7.08 (m, 1 H), 5.02-4.92 (m, 1 H), 3.96-3.86 (m, 1 H), 3.87-3.83 (m, 3H), 3.81 -3.50 (m, 5H), 3.43-3.19 (m, 2H), 3.15-3.09 (m, 6H)), 3.09-2.91 (m, 2H).

We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 2-Fluoro-6-(2H-1,2,3-triazol-2-yl)benzoic acid ,and how the biochemistry of the body works.

Reference:
Patent; JANSSEN PHARMACEUTICA NV; CHAI, Wenying; LETAVIC, Michael, A.; LY, Kiev, S.; PIPPEL, Daniel, J.; RUDOLPH, Dale, A.; SAPPEY, Kathleen, C.; SAVALL, Brad, M.; SHAH, Chandravadan, R.; SHIREMAN, Brock, T.; SOYODE-JOHNSON, Akinola; STOCKING, Emily, M.; SWANSON, Devin, M.; WO2011/50198; (2011); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 288-36-8, New discoveries in chemical research and development in 2021. We’ll be discussing some of the latest developments in chemical about CAS: 288-36-8, name is 1H-1,2,3-Triazole, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

To a solution of 2-chloro-5-nitro-3-(trifluoromethyl)pyridine (1.2 g, 6.84 mmol) and 2H-1,2,3-triazole (0.567 g, 8.20 mmol) in anhydrous DMA (5 mL) was added K2CO3 (1.89 g, 13.67 mmol). The reaction mixture was stirred at room temperature for 2 h. The mixture was filtered and washed with ethyl acetate (10 mL*3). The filtrate was concentrated to dryness to give a crude product.

Therefore, this conceptually novel strategy might open impressive avenues to establish green and sustainable chemistry platforms.In my other articles, you can also check out more blogs about 1H-1,2,3-Triazole.

Reference:
Patent; Janssen Biotech, Inc.; Lu, Tianbao; Allison, Brett Douglas; Barbay, Joseph Kent; Connolly, Peter J.; Cummings, Maxwell David; Diels, Gaston; Edwards, James Patrick; Kreutter, Kevin D.; Philippar, Ulrike; Shen, Fang; Thuring, Johannes Wilhelmus John Fitzgerald; Wu, Tongfei; (412 pag.)US2018/170909; (2018); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Research speed reading in 2021. The dynamic chemical diversity of the numerous elements, ions and molecules that constitute the basis of life provides wide challenges and opportunities for research. 103755-58-4, name is (1-Phenyl-1H-1,2,3-triazol-4-yl)methanol belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. name: (1-Phenyl-1H-1,2,3-triazol-4-yl)methanol

General procedure: To a solution of (1-aryl-1H-1,2,3-triazol-4-yl)methanol (2a-2c) [18] (10 mmol) in dry DMF (5 mL), anhydrous sodium hydride (15 mmol) was added and stirred for 5 min. After adding propargyl bromide (12 mmol), the resulting mixture was stirred at room temperature overnight. Upon completion of the reaction water (20 mL) was added and the whole was extracted with dichloromethane (3 × 30 mL). The combined organic layers were washed with brine and dried over Na2SO4. The organic layer was concentrated in vacuum and the residue was purified by silica gel (60-120 mesh) column chromatography using hexane-EtOAc, (7 : 3, v/v) as eluent to afford products 3a-3c as white solids. 1-Phenyl-4-[(prop-2-yn-1-yloxy)methyl]-1H-1,2,3-triazole (3a). Yield 89 %, white solid, mp 70-73 C. IR spectrum, nu, cm-1: 3221 (?C-H), 2108 (C?C), 1230 (N=N), 1064, 1041 (C-O). 1H NMR spectrum (400 MHz, CDCl3), delta, ppm: 7.99 s (1H, triazole H), 7.62 d (J = 8.9 Hz, 2H, Ar-H), 7.58 d (J = 8.9 Hz, 2H, Ar-H), 7.50 t (J = 7.3 Hz, 1H, Ar-H), 4.65 s (2H, OCH2), 4.20 s (2H, OCH2), 2.50 t (J = 2.4 Hz, 1H, ?C-H). 13C NMR spectrum (101 MHz, CDCl3) deltaC, ppm: 145.78, 140.09, 129.76, 128.63, 122.57, 121.70, 77.08, 74.22, 62.34, 57.33. Found, %: C: 67.57; H 5.17; N 19.68; O 7.47. C12H11N3O. Calculated, %: C 67.59; H 5.20; N 19.71; O 7.50. MS: M 214 [M + H]+.

The catalyzed pathway has a lower Ea, but the net change in energy that results from the reaction is not affected by the presence of a catalyst. In my other articles, you can also check out more blogs about 103755-58-4

Reference:
Article; Reddy; Reddy; Goud; Rao; Premkumar; Supriya; Russian Journal of General Chemistry; vol. 86; 6; (2016); p. 1424 – 1429; Zh. Obshch. Khim.; vol. 86; 6; (2016); p. 1424 – 1429,6;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

New discoveries in chemical research and development in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 288-88-0, name is 1H-1,2,4-Triazole belongs to triazoles compound, it is a common compound, a new synthetic route is introduced below. 288-88-0

General procedure: To a solution of Cu(OAc)2·H2O (0.01 mmol) in DMF (2 mL) were added aryl iodide (1.2 mmol), nitrogen-containing heterocycle (1.0 mmol), and Cs2CO3 (2 mmol) under nitrogen atmosphere. The mixture was stirred at 110 C for 24 h. After cooling to ambient temperature, the mixture was partitioned between water and ethyl acetate. The organic layer was separated, and the aqueous layer was extracted with ethyl acetate. The combined organic layers were washed with brine, dried over Na2SO4, and concentrated in vacuo. The residue was purified by flash chromatography on silica gel.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 1H-1,2,4-Triazole help many people in the next few years.

Reference:
Article; Xu, Zhong-Lin; Li, Hong-Xi; Ren, Zhi-Gang; Du, Wei-Yuan; Xu, Wei-Chang; Lang, Jian-Ping; Tetrahedron; vol. 67; 29; (2011); p. 5282 – 5288;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Application of 4928-87-4, New Advances in Chemical Research in 2021. The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 4928-87-4, name is 1,2,4-Triazole-3-carboxylic acid, molecular formula is C3H3N3O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

A mixture of (S)-4-(aminomethyl)-N-(4-chloro-2-(2-methyl-4-(3,3,3-trifluoropropyl)piperazin- l-yl)phenyl)-2,3-difluorobenzamide (0.08 g, 0.16 mmol), l/ -l ,2,4-triazole-3-carboxylic acid (0.10 g, 0.88 mmol) and DIPEA (0.2 mL, 1.1 mmol) in CH3CN (2.5 mL) was stirred at room temperature for 10 min, then HATU (0.08 g, 0.21 mmol) was added. And then the mixture was stirred at room temperature for 12 h and was purified by HPLC to give the title compound (0.033 g, 34.6%). LC/MS m/z = 586.1 [M+l]+.

The potential utility of systematic synthetic strategy will be applicable to efficient generations of chemical libraries of compounds to find ‘hit’ molecules.Read on for other articles about 1,2,4-Triazole-3-carboxylic acid, hurry up and to see.

Reference:
Patent; ARENA PHARMACEUTICALS, INC.; TRAN, Thuy-Anh; KRAMER, Bryan Aubrey; SHIN, Young-Jun; WO2014/182688; (2014); A1;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics

Synthetic Route of 61-82-5, New Advances in Chemical Research in 2021. Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. 61-82-5, name is 1H-1,2,4-Triazol-5-amine, molecular formula is C2H4N4, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, below Introduce a new synthetic route.

General procedure: A mixture of aldehyde (1.0 mmol), dimedone (1.0 mmol),1H-1,2,4-triazol-3-amine (1.0 mmol) and nano-AlPO4(SO3H) (0.1 g) was stirred in the acetonitrile (4.0 mL)at 50 C for an appropriate time. After the completion of thereaction as indicated by TLC, dichloromethane was addedto the solidified mixture and the insoluble catalyst was separatedby centrifugation. Evaporation of the solvent from thefiltrate and recrystallization of the solid residue from hot ethanolafforded the pure products in good to excellent yields

In the meantime we’ve collected together some recent articles in this area about 61-82-5 to whet your appetite. Happy reading!

Reference:
Article; Sharghi, Hashem; Aboonajmi, Jasem; Aberi, Mahdi; Shiri, Pezhman; Journal of the Iranian Chemical Society; vol. 15; 5; (2018); p. 1107 – 1118;,
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics